Compare · Shampoos
K18 Peptide Prep Detox Shampoo vs Ouai Detox Shampoo: which is better?
Both shampoos are praised for tackling buildup and hard-water residue, though Reddit users also report scalp irritation or dryness.
Reddit’s pick
Detox Shampoo
- Rated higher: Detox Shampoo — 86 vs 67 nextscore
Ouai Detox Shampoo has a clearly more positive balance of verdicts, with praise for resetting hard-water mineral and styling buildup and leaving fine hair less oily.
Choose K18 Peptide Prep Detox Shampoo if
- you want scalp buildup cleared and have fine hair that dislikes a straw-like finish
Choose Ouai Detox Shampoo if
- you have greasy roots or hard-water mineral and styling buildup
87mentions
201mentions
At a glance
| K18 Peptide Prep Detox Shampoo | Ouai Detox Shampoo |
|---|---|
| $0.16/ml | $0.11/ml |
| 67 · 50 verdicts | 86 · 94 verdicts |
| Salicylic Acid, Peptides | — |
What Reddit says
K18 Peptide Prep Detox Shampoo
What Reddit likes
- Salicylic acid clarifies scalp buildup
- Cuts through hard-water residue
- Leaves fine hair clean without straw texture
Watch out for
- Too strong for sensitive scalps; itching, flaking, soreness, and shedding show up
- Strips toner and dries highlighted lengths
- Can leave hair flat or film-coated
Ouai Detox Shampoo
What Reddit likes
- Chelating action tackles hard-water mineral buildup
- Strong reset for product buildup and greasy roots
- Fine hair often looks better and less oily
Watch out for
- Can dry out ends and leave hair brittle
- Made dandruff worse for some scalps
- Some users report dry, tangled hair afterward
Compare full ingredient lists · 5 in common
In both · 5
- Water (Aqua) (Eau)
- Sodium C14-16 Olefin Sulfonate
- Glycerin
- Citric Acid
- Sodium Hydroxide
Only in K18 Peptide Prep Detox Shampoo · 13
- Cocamidopropyl Hydroxysultaine
- Salicylic Acid
- Charcoal Powder
- SH-Oligopeptide-78
- Panthenol
- Sodium Phytate
- Guar Hydroxypropyltrimonium Chloride
- Caprylyl Glycol
- Caprylhydroxamic Acid
- Potassium Hydroxide
- Fragrance (Parfum)
- Benzyl Salicylate
- Limonene
Only in Ouai Detox Shampoo · 28
- Sodium Lauroyl Methyl Isethionate
- Cocamidopropyl Betaine
- Decyl Glucoside
- Acrylates Copolymer
- Cocamide Mipa
- Parfum (Fragrance)
- Polysorbate 20
- Hydrolyzed Keratin
- Hydroxypropyl Guar Hydroxypropyltrimonium Chloride
- Vinegar
- PEG-150 Distearate
- Polyquaternium-7
- Benzophenone-4
- Sodium Chloride
- Tetrasodium EDTA
- Trisodium Ethylenediamine Disuccinate
- Isopropyl Alcohol
- Propylene Glycol
- Disodium EDTA
- Chlorphenesin
- Sodium Benzoate
- Phenoxyethanol
- Potassium Sorbate
- Linalool
- Citronellol
- CI 14700 (Red 4)
- CI 19140 (Yellow 5)
- CI 61570 (Green 5)